Aaron silkman and harry sexton



No. 617,780. Patented lan. I7, |899` A. SILKMAN & H. SEXTDN.

HORSESHOE. `v

(Application led May 27, 1896.,

UNITED STATES PATENT OFFICE.

- AARON sILKMAN AND HARRY sExToN, F NRW YORK, N. Y.

HORSESHOE.

SPEGIFICATION forming' part. of Letters-Patent Nv. 617,780, dated 17, 1899. Application filed my 27, lass. serial No. 593,302. (No model.)

To aZZ whom it may con/cern..-

' Be it known that we, AARON SILKMAN and HARRY SExToN, citizens of the United States, and residents of New York, in the county of NewYorkand State of New York, have invented certain new and'useful Improvements in Horseshoes, ofwhich the following is a specification, reference being had to the accompanying drawings, formingapart thereof, in which similar numerals of reference indi-- cate corresponding parts. This invention relates to horseshoes'; and the object thereof is to provide a shoe of this class with detachable calks, the special object being to provide calks which can bereadf ily removed when worn down to or nearly to provided witha groove 6, with which commuthe shanks thereof and to replace the same with new calks without removing the shoe from the hoof.

The-invention is fully disclosed in the following specilication, of which the accompanying drawings form a part, in which- Figure 1 is a bottom plan view of a horseshoe made according to our invention, one. of the heel-calks being removed. Fig. 2 is a side view thereof. Fig. 3 is a view of one of the detachable calks, and Fig. 4 is a View of a sharpened calk.

In the drawings forminga part of this specication the separate parts of' our improvements are designated by numerals of reference, and we have shownat 5 a horseshoe nicate nail-holes 7, by which the shoe may be secured to the hoof of ahorse. We also provide detachable calks 8, which are provided with screw-threaded shanks 9, the said calks 8 being adapted to serve as heel-calks, and the ends of the shoe 5 are provided with screwthreaded openings 10, adapted to receive the shanks 9 of the calks 8, and said shanksare provided centrally with a bore or passage which extends therethrough and in to the calk to a point adjacent to the end thereof, as

clearly shown in dotted lines in Figs. 2, 3, andl 4, and thesaid holes are angular in form in cross-section, as shown in dotted lines in Fig.

1, the object of which will be hereinafter more p fullyI explained.

The body portions of the toes 8 are preferably angular in form in 'cross-section and madefto conform to the sides of the shoe when may use a sharpened calk, as sllown at 8' in Fig. 4, the operation of securing the same in place being the same as described above.

We also provide a toe-calk which consists of two separate parts 12 and 13, eacll of said parts being oblong in form and each being beveledon one end, as shown at 14, and each of said parts is provided with a screw-threaded shank 15, and the toe'of the shoe is provided with screw-threaded openings 16, adapted to receive said shanks, and each of said parts 12 and 13 is provided with angular bores or passages 11, which extend through, the shanks thereof into the wearing part, as clearly shown in dotted lines, and when connecting the separate parts with the shoe the part 12 is first screwed far enough in, so that onlya quarterturn is necessary to screw it entirely home,

when the part 13 is screwed into position, and

in order to facilitate this operation the inner end of the part 13 is cut away, as shown at 16', and when the part 13 is entirely home the part 12 is given the quarter-turn and is also p 'parts 12 and 13 i-nto the wearing part and to a point adjacent to the end thereof, so that when the said calks or parts 12 and 13 are worn` down in use the said bores or passages will extend entirely through the remaining part, thereby communicating with the surface, and by insertinga key with a shank correspending in shape to the said bore or passage the said calks may be'removed from the shoe and new ones may be secured in place, the latter operation being-performed with a Wrench, thereby avoiding the necessity of removing the shoe from the hoof.

The advantage of this construction will be readily understood when it is remembered that the calks are" generally worn down so close to the shoe before they are removed that it would be impossible to grip the same With a wrench, and if the means for disengaging Shanks, while in this construction the bores or passages are protected from wear and the calks can be removed at any time Without any diiculty, no diierence how much the calks are worn away.

Our improvement is well adapted to accomplish the result for which it is intended, and by means thereof a smooth shoe may be quickly and'easily converted into a sharpened one, and it will thus be seen that we accomplishthe object of our invention in a simple and efficient manner and Vbya construction which is comparatively inexpensive, and we reserve the right to make any changes which fairly come Within the scope of our invention.

Having fully described our invention, what We claim, and desire to secure by Letters Patent, is- 4 i 1. A horseshoe-calkv consisting of a body and a screw-threaded shank, said body and shank lprovided with a passage with which a tool may be engaged from below the shoe for unscrewing the shank when the calk is worn and without removing the shoe from the hoof of the horse.

2. A horseshoe-calk consisting of a body and a screw-threaded shank, said shank and body provided with a vertical keyway of the same form throughout its length, with which a key may be engaged from below the shoe when the calk is Worn and without removing the shoe from the hoof of the horse,isubstan tially as described.

3. A horseshoe provided with a detachable calk having a screw-threaded shank which is provided with a bore or passage which is normally closed when the shoe is-in position and open when a portion of the wearing part of said calk is worn away, whereby the said calk may be removed without removing the shoe from the hoof.

4. A horseshoe provided with a detachable calk which is provided with a screw-threaded shank having a central bore or passage extending therethrough and into the wearing portion o'f the said calk, whereby the said bore or passage is in communication with the outer end of said calk when partially worn away, for the purpose set forth. y

5. .A horseshoe provided with a detachable calk which is provided with a screw-threaded shank, the said shank being provided with a central bore orpassage which extends therethrough and into the said calk to a point adjacent to the outer end thereof, whereby the said bore or passage isv placed in communica- 'tion with the outer surface of said, calk by the wearing away of the same, and being angular in form in cross-section, substantially as and for the purpose described. Y

6. A horseshoe provided with adetachable calk which is provided with a screw-threaded shank, the said shank being provided with a central bore or passage which extends therethrough and into the wearing-surface of the said calk to a point adjacent to the outer end thereof, and being angular and prismatic in form throughout its entire length, substantially as and for the purpose described.

In testimony that we claim the foregoing as our invention we have signed om` names, in presence of the subscribing witnesses, this 25th day of May, 1896.

AARON SILKMAN. HARRY SEXTON.

' Witnesses:

C. GEEST, N J. SUNEsoN. 

